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QCE 2 2014 Test B
Test Description: This is 10 questions from QCE #2 2014
Instructions: Answer all questions to get your test result.
1) The inheritance of a trait in humans is best described as being determined by
A
a single allele
B
one pair of chromosomes
C
the sex chromosomes of the offspring
D
one or more pairs of alleles
2) In pea plants, the allele for round seeds (R) is dominant to the allele for oval seeds (r). In a cross between two heterozygous plants, what percentage of the offspring will have round seeds?
A
75%
B
100%
C
50%
D
25%
3) In pea plants, the allele for round seeds (R) is dominant to the allele for oval seeds (r). In a cross between two heterozygous plants, what percentage of the offspring will have oval seeds?
A
25%
B
100%
C
50%
D
75%
4) In pea plants, the allele for round seeds (R) is dominant to the allele for oval seeds (r). In a cross between two homozygous round plants, what percentage of the offspring will have round seeds?
A
100%
B
50%
C
25%
D
75%
5) In pea plants, the allele for round seeds (R) is dominant to the allele for oval seeds (r). In a cross between a heterozygous plant and a homozygous oval plant, what percentage of the offspring will have round seeds?
A
25%
B
100%
C
50%
D
75%
6) Which of the following is an example of codominance in genetic traits?
A
a blue-eyed man and a brown-eyed woman produce a blue-eyed child
B
an orange cat and a black cat produce an orange-and-black kitten
C
a tall pea plant and a short pea plant produce a tall pea plant
D
a color-blind woman and a man with normal vision produce a color-blind son
7) Mutations within a DNA sequence are
A
natural processes that always affect the phenotype
B
natural processes that produce genetic diversity
C
unnatural processes that are harmful to genetic diversity
D
unnatural processes that always affect the phenotype
8) Which statement about DNA is correct?
A
a female child's DNA will exactly match the mother's DNA
B
a male child's DNA will exactly match the father's DNA
C
a child's DNA will be unrelated to the mother's or father's DNA
D
a child's DNA will show similarities to both the mother's and father's DNA
9) Multicellular organisms are composed of cells that vary in appearance. What is the most likely reason cells in organisms have different shapes?
A
to perform similar roles
B
to work at different rates
C
to work at similar rates
D
to perform different roles
10) Which of the following shows an increase in complexity of the levels of organization in living things?
A
cells, tissues, organs, systems, and organisms
B
cells, tissues, organisms, organs, and systems
C
tissues, cells, organs, organisms, and systems
D
tissues, organs, cells, systems, and organisms
*select an answer for all questions
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